http://demonstrations.wolfram.com/IntegratingOddPowersOfSineAndCosineBySubsti...
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This Demonstration shows the first two steps in how to put an odd power of a sine into a form suitable for integration. Suppose the expression is sin^2n + 1(x) . (1) split off one sine to get sin^2n(x)sin(x) (2) use sin^2(x) + cos^2(x) = 1 to express si...
Contributed by: George Beck
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